Rotary internal-combustion engine.



S. DIAMANT. ROTA'RY INTERNAL UOMBUSTlON ENGXNE.

` APPLICATION FILED DBC.1G,1911.

Patented June 30, 1914.

4 SHEETS--SHBBT l.

S. DIAMANT. ROTARY INTERNAL GOMBUSTION ENGlNE,

APPLICATION 'ILED 13150.16, 1911.

atellted June 30, 19ML 4 SHEETS-SHEET 2.

s. DIAMANT. ROTARY INTERNAL COMBUS'IION BNGNE.

APPLICATION .FILED DEG.16, 19H.

4 SHEETSASHEBT 3.

lg@j g Patented June 30,1914.

g wenfai' S. BIAMANT. ROTARY INTERNAL CUMBUsflom Hmmm APLLGATION FILED DEU. 1G. 19H.,

f1 SHEETS' SHEET 4.

mw wfg! SQISMGNEO DEAMANT, O-BUDAPEST, AUST'IA-HUNGRY.

ROTRY INTERNALCQMBUSTON ENGNE.

specification of Leners raam.

lita-t entcd June 8o, Milla..

Application filed Becember 1li, 1911. Serial No. 666,104.

Be it. known that I, Snusiroxno DIAMANT mechanical engineer, subject. of the Emperor of Austria-llungary, residing atl Budapest, in the Empire ot ustria-Hungary, have invented certain new and useful 'Improvements in llotary 'Internal-Combuetion En* eines, ol" which the tollowing ist; a Specification, reference being! had therein to the ac chamber arranged ccmpanvinggj drawiiug.

This invention relates to a new method of' working' tor rotaryv combustion engines and to a/suitahle rota engine for carrying out the new method ol working.

`The method oix working distinguished hy the tact that tour explosion cells arlranged in the stationary part of the rotary engine are provided in succession with carhureted air under pressure, by a Single in the rotary part. under the action of one of two pistons guided in the stationary part of the engine, each filled cell is then lett charged during' one phase for the purpose oi heating the mixture. and exploded and saienfzed duringy the follow ing` two phases, whereby it is brought into communication at the moment. of explosion with the second chamber in the rotary part, in which second chamber one of the said two pistoiis is at the beginning' of its stroke at the moment ot' explosion.

The, distinguishing 'featurof the new engine lie. in the .tact that. the me conaists of a stationary drum like body containing tour explosion cells and. ot a tubedike body rotating` around the ld 'drum like body, which tube-like hoc coi'dains two dia.- metrif'illy opposite rhansbcrs formed by eccentric, cavities in which engage separate diametrically,opposite pistone au lcd in the said statitmary hody, and vdierehy one of the chambers is constantly in communication with the atmosplwrc at its front cnd 'in 'the direiftion oi rotatifm` and the second cham ber is in constai'it eonununication with the atlnosgillweie at` its batK cud in the direction otrotation The tirs named chamher, hereinafter called the comin-cession chaniher` presses its contents of air, at every halt revolution, under the action of one ot' the pistons and suitable i foverning members. into one ot the tour explosion celley and thereby provide? during; a double new lution of the rotary hodv. each of the cxplosion cells once with air under pressure. The second named chamber ar 1A.inged in the rotary ring' like body.y hereinafter called. the expansion chamber. is brought, by means ot suitable `governingnicnlbers, into'communication after every half revolution with another cell, namely with that of the four eX plosion cells which has ust exploded, namely in that moment in which the piston working with this expansion chamber .is at the coininencement of its stroke. A further particular distinguishing 'feature of the engine lies in the fact that the space between the pistons ot the pump utilized for the purpose oit scavenging' the cells with fresh air; for this purpose this space is .in Communication on the one hand with the open air through a suction valve, and on the other hand with each of the explosion cells through 'tour pi es each provided with a back pressure va ve, so that the air drawn in by the outward movement and forced out by the inward movement of the pumpe` always flows into the cell in which the explosion has taken place, and which is placed in communication with the open air by the governing men bers. And in order that my invention may be more fully understood l have caused to be appended hereunto five, sheets of drawings marked with let-ters of vreference indicating like parts in the various figures.

' .ligures 'l and 2 are respectively a longitudinal axial section and a vertical cross section on line A B Fig'. i of an embodiment of a rotary internal combustion engine Consti-noted in accordance with the invention. Fig'. 8 is a horizontal section on the broken yline C D E ot Fig. Q. 4 and 5 are two side views ot' the engine. Fig. 6 is a diagram showingthe succession of phases .in all four cells during` four hallrevolutioins. f

The engine comprises an unrotatably mounted drum like body o, in which are guided two axially situated pistons m, In, keptapart by springs 1'. In each of the halves of the stationary body o formed by the pistons m, n are arranged two chambers l. 9 and f2, Il respectively, of equal capacity, the walls ol which are played on by cooling wa ter, which is circulated by a pump in any known manner. The drum like, stationary body '1' is embraced by a rotary tube-like body fw, which is keyed to the shaft a. passing' through the stationary part of the engine by means of the 'casingr parts z, and is provided with two eccentric cavities C and E of approximately 120. degrees in its inner periphery, in which cavities the pistons m and a kept apart from each other by the springs 1^, engage in any well known air tight manner. The springs r are seated on two stays a: secur d to the shaft@ in the body lv. One of th two chamber-"s, namely E is placed in communication with the at mosphere by the port c formed in its back end in the direction of rotation of the tube like body lw, and the otherl chamber C is placed by the port c at its front end in the direction of rotation also in communication with the atmosphere. The port c (Fig. extends through the Whole length of the rotary body lw, and is opened on both sides 0f the same (sec Figs. il and 5) The port e (see Figs.r 2 and 3) opens on the periphery of the rotary body w Which is provided with cooling flanges. .The advantage of this arrangement of port openings lies in the fact that the exhaust gases forced out through the port e cannot contaminate the fresh air drawn in through the port c, and that, moreover, vthe removal of the exhaust gases is aided by centrifugal force. The 'chamber E is hereinafter. called the expansion chamber, and the chamber 'C the compression chamber. .s

rlhe two cells l and 3; situated on one side of the pistons m, a and ythe two cells 2 and e situated on the otherside, are each in communication4 at the same end with a valve casing; these valve casings are pro vided with rotary valves l, U, HI and lV pf any known type, Which open the cham bers l, 2, 3, a td or .cut the same od, hom the ports f, g, iff-and e' opening at both sides of the pistons m, n on the periphery of the stationary body o, in accordance with the method of Workin,. -The rotary -valves Il, Hl, IV control. thereorethe communication of the cells "lf/l ,with the diierent parts of the chambers C and E divided by the pistonsI m, n. T he actuation of these rotary valves takes place by means ci suitable toothed Wheel gearing (not shown) driven. by the toothed Wheel t on the shaft 0, in such a manner that they make one revolution for every two revolutions of the rotary body, that is to say, that they lreturn to their initial position upon the completion of two revolutions by the rotary body.

The chamber o situated between the pis-` tons m, n communicates on the one hand with the open air (Fig. l), and on the other hand is in communication with each. of the four cells 1, 2, 3, and Ll by a conduit pipe 15 with four branches, a back pressure valve 1l, l2, 13 and 14 respectively being placed in each ot the same (Fig. 4) in such a manner that the air drawn in through the suction valve l0 when the pistons m, n move away from each other', is forced into the conduit pipe l5 by the inward moving pistons, but can only enter into those of the 'four cells L4 in which no back pressure exists. The compressed air therefore only an' rives in that cell in which the explosion has 'takeny place, and which, as hereinafter will be described, is placed in communication with the 4atmosphere by the position taken up by the corresponding one of the valves -IV for the purpose of scavenging.

In cach of the cells 14: is an ignition plug 2l-2e, iixed on the opposite side of the stationary body c to that on which the governing gearing is situated. These ignition plugs are operated in accordance with the different phases by a Contact maker actuated by the engine. The benzin conduits also en- -ter the cells 1-4 from the same side as the said ignition plugs, and the necessary amount of benzin is linjected by a benzin pump actuated in a known manner into each ot the cells in succession according to the phases, before the air is forced in.

The compression chamber C serves the purpose of lilling one of the cells l-l with. compressed air at every halt revolution of the engine; the expansion chamber E serves to take up the exploded gases iiowing from one of the cells at every halt' revolution and by the pressure of these gases against the fixed piston causes rotation of the rotary element, or rotor.

In the diagram, Fig, the rotary part of the engine is shown in four successive half revolutions 1, 2, 3 and 4, each in four posi-` tions, and lit is indicated, in which phase each of the cells is, at each half turn; the

rotation of the rotary part takes place in a right hand direction. In this diagram: the

cells being charged are indicated by broken `Working of the engine with reference to the diagrammatical figures of Fig. 6:

.7.915 half rccolutioa, 1st group of figures. "in the lirst half of vthe lirst revolution the cell l is exploded; the gases floating out .through the valve l and theport'g reach the increasing part of the expansion chamber E and produce by their reactionary pressure against the piston p, a'turning moment inthe direction of rotation. The gases in the decreasing part of. the chamber E resulting from an earlier explosion are forced out through the port e. The cell fl which is in itsexhausting o r scavenging phase is also in com munication by the portf with the decreasing part of the chamber E, so that the pistons m, a moving toward one another in the second part of the half revolution. having drawn air into the chamber o in moving away from one another. press the said air through the cell l which is not under pres- :troncos sure, into the decreasing part of the chambei" E, from which it is sent into the open air through thc port c. The decreasing part of the chamber C is placed in communie-ation with the cell 3 by the port and the valve IV and forces its contents oi' air into the same. Benzin has been injected into cell 3I at the beginning of this-half revolution andy vVaporized underthe iniiuence ot the het walls, and forms an explosive mixture with the incoming compressed air. The -increasing part of the chamber C tills with fresh air through the v)ort o. The cell 2 has beencharged during the previous half revolution and the inclosed air and gas heated during this hal-l revolution (hereinbefore described the first half revolution).

23ml half revolution; ,52nd grou lof figures-uit the commencement of t 1e second halt' of the first revolution of the body w, the cell, 2 is exploded, the gases liowing out through the port It', and the suitably positioned Avalve Il, reach the increasing part of the expansion cluuuber E and produce, by their reactizmary pressure against the piston u nou' working with this chamber E, a reactionary pressure, the turning moment of which acts in the direction of the impulse given by the earlier explosion. The gases from theearlier explosion in cell l still remaining in the decreasing part of the chamber E are forced out t rough the port c. The cell l. brought to explosion in the :Erst hal-l revolution is also in communication with this decreasing' part of the chamber E, through the port so that the compressed air, which has been forced into the cell l by the again approaching pistons m, n in the second halt oi the half revolution, is driven into the decreasing part of the chamber E through the port t' and is forced from the said part through' the ports e into the open by the action of the piston n. The decreasing part of the chamber C, the Whole of which has been in communication Wit-h the atmosphere between the first sind fecondY half revolution, communicates with the cell 4 through the port f and the suitably posiplosive mixture.

tioned valve Hl and forces its contents of air into the said cell. At the beginning of the half revolution benzin has been injected into the cell il, Which benzin vaporizes and gives with the compressed air an eX- rlhe' increasing part ot the chamber C is again filled With fresh air through the port c. The charge introduced into the cell 3 during' the earlier half revolution is heated during the Whole of the second half revolution.

2rd half' revolution/:- 3rd group of #Y1-- urea- At the commencement ot the first half ot the second revolution the cell 3.y is exploded The exploded gases flowing through the ort g, and the suitably positioned valve il, into the increasing part of the expansion chamber l, produce by their re-actioi'iary iniiuencc against the piston fm, now working with this chamber lll, areactionary pressure, the turning moment of which acts in the direction olf the vimpulse given by the earlier explosion. The gases from the earlier explosion in cell Q, still remaining in the decreasing part of the chamber E, are forced out through the portie. The cell 2 brought to explosion in the earlier halt revolution is also in communication with this decreasing part of the chamberE, through the port f, so'th'at the compressed air, which has been forced into the cellr by the again a proaching pistons m, miti flo the second hal of this half reyclution, is

driven into the increasing partv of the cha-1nber E, through the port f, and is forced from the said port through the ports e, into the atmosphere by the action of .the iston m. The decreasino'parto the vcham er C; the whole of Whih as before has been in communication with the atmos'lheie, at the commencement of the third Ahalpi` revolution, communicates with the (fall l, through the port z', and the suitably positioned valve 'IV and forces its contents of air into the said cell. .at the beginning of' the third half revolution benzinhas been injected into the cell. 3,' which benzin vaporizcs and gives7 with the compressed air, an explosive mixture. The increasing part of the chamber C is againA filled with fresh air through the port c.

:The charge introduced into the cell 4 dur ing the earlier half revolution, is heated vhalf of the second revolution, the cell 4 is exploded. The exploded gases flowing through the port le andthe suitably positioned valve Il, reach the increasing part of ,the expansion chamber E, and produce by their reactionary influence against' the piston n, now working with the chamber E, a reactionary pressure, the turning moment of which act-s in the direction of the impulse given by the earlier explosion. The gases 'from the earlier explosion in cell 3, still re` maining in the decreasing part of the chamber E, are forced out through the port e. The cell 3, brought to explosion in the earlier half revolution, is. also in communication with the decreasing part of the chamber E, through the ort i so that the compressed air, forced into the cell 3, by the' again approaching ,pistons m, n, in the second half o'l5 the fourth half revolution, is driven into the decreasing part of the chamber E, through the port i', and is forced' from the said port through the ports e. into the atmof-tphereby the action of the piston n. The decreasing part of the chamber C, the whole of which has been in communication with the atmosphere, at theJ commencement vof the fourth halt revolution, communicates with the cell 2, through the port f and the suitably positioned valve III, and forces the content-s of air into the said cell. 'l At the beginning of the half revolution, benzin has been injected into the cell 2, which benzin vaporizes and gives with the compressed air, an explosive miXt-ure. rIhe increasingpar't ofthe-chamber C is'again filled with 'fresh air through the port c. The charge introduced into the cell I during the earlier half revolution, is heated during the whole ot' this half revolution.

As will be readily understood, the arrangement of the two parts of this engine maybe so alteredthat the inner'clrumdike part rotates,v and the outer ring-like part remains stationary.

Having now particularly described and ascertained the nature of this invention and in what manner the same is to be performed, I declare that what I claim is:

l. In a four cycle rotary engine of the internal combustion type, a stator provided Withla series of cells, said cells being vin port 'fmmunication with the exterior of the stator, a rotor surroundingsaid stator and provided witha compression chamber be tween the stator and rotor, said rotor being provided with spaced abutments`arranged to Lioness provide chambers between the stator and rotor, retractile pistons carried by the stator and bearing against the rotor, and valve means governing the flow of gases through the port communications of said cells.

2. In a four cycle rotary engine of the internal combustion type, a pair of members constituting a stator and a rotor, one of said members being rovided with a plurality'of pairs of cells, t e other member being provided with a single compression chamber between said stator and said rotor and an exhaust passage, the. first'rnentioned member being further provided with valve chambers arranged at the ends 'of said pairs of cells, each lvalve chamber being in port communication with a pair of cells, one of said members being further dprovided with spaced "abutments 'arrange to provide chambers between said members, the other of said lmembers being provided with retractile pistons, rotary valves ttedv in Valve seats and means to cause explosions successively in said cells.

In testimony whereof I aix my signature t in the presence of two witnesses.

SIGISMQNDO DIAMANT. 

